Linux ip route del 不删除整个表
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ip route del does not delete entire table
提问by Vincent Ketelaars
I have recently started using ip routecommands for advanced routing stuff. Now I have come across something rather puzzling to me. A default route added to a table will be easily deleted whereas another route remains.
我最近开始使用ip route高级路由命令。现在我遇到了一些令我感到困惑的事情。添加到表中的默认路由将被轻松删除，而另一条路由则保留。
I add these two rules:
我添加了这两个规则：
ip route add dev wlan0 default via 192.168.0.1 table 21
ip route add dev wlan0 192.168.0.0/24 table 21
Now if I do:
现在，如果我这样做：
ip route show table 21
I see both of these rules present.
我看到这两条规则都存在。
default via 192.168.0.1 dev wlan0
192.168.0.0/24 dev wlan0 scope link
If I then try to delete table 21, and show it again:
如果我然后尝试删除表 21，并再次显示它：
ip route del table 21
ip route show table 21
There is still that rule remaining.
该规则仍然存在。
192.168.0.0/24 dev wlan0 scope link
Can anyone explain this? The man page says that del is designed to delete a ROUTE, which also includes tables.
谁能解释一下？手册页说 del 旨在删除 ROUTE，其中还包括表。
采纳答案by nic
As @user3291010 has already pointed out, to delete a full table, use the following command:
正如@user3291010 已经指出的那样，要删除一个完整的表，请使用以下命令：
This command deletes table 21:
此命令删除表 21：
ip route flush table 21
The command you tried is used to remove specific rules from a table. It wants a prefix to match on. When you didn't supply the prefix, it just deleted the first entry, which happened to be the default route.
您尝试的命令用于从表中删除特定规则。它需要一个前缀来匹配。当您没有提供前缀时，它只是删除了第一个条目，这恰好是默认路由。
To remove the second entry, and only the second entry, you could run this command:
要删除第二个条目，并且仅删除第二个条目，您可以运行以下命令：
ip route delete table 21 192.168.0.0/24
As far as I know, there is no way to delete all entries using the deletecommand.
据我所知，无法使用该delete命令删除所有条目。
回答by ancientt
Maybe try:
也许尝试：
ip route flush table 21
